User guide

LBA-USB User Guide Document No: 11294 Page 37
small amount of virtual memory assigned to the frame buffer is not critical, but a
great deal may make you wonder what kind of alien being has just taken over
your hard drive.
Windows will allocate the frame buffer to real memory first. When it is filled,
Windows allocates virtual memory. For this reason, it is a good idea to run LBA-
USB with no other applications running in the background. This will free up as
much real memory as possible for frame buffer use.
How do I know when my frame buffer is spilling into virtual memory?
The hard disk drive light will begin to flicker when the real memory frame buffer
capacity is filled, and the virtual file swapping begins. To avoid this, reduce the
frame buffer size until it stops.
Note: Be sure to analyze this occurrence and perform the adjustment with Logging
disabled.
Pixel Bits (LBA-USB-Lxxx model specific)
Select the number of bits to allocate per pixel.
External Trigger Input (LBA-USB-Lxxx model specific)
An external trigger enables the camera to be synchronized with an external
source. Triggers are rising edge sensitive and should only be connected to 3.3V
or LVTTL digital logic signal. Higher voltage may cause damage to the camera.
The included cable connects to the trigger input on the camera.
If an external input trigger is attached to the camera, activate the External
Trigger Input option, and then adjust the exposure delay (in milliseconds) as
necessary. The exposure delay sets the time interval between the moment when
the trigger is received and the moment when the exposure begins.
Strobe Out (LBA-USB-Lxxx model specific)
Activate the Strobe option to enable the strobe output feature. No cable is
supplied for strobe out. The 6-pin Hirose connector houses both the trigger in
and strobe out signals. The wiring diagram for a cable connector is shown in the
figure below.
GROUND
VIDEO SOF
STRO BE O UT
VCC OUTPUT
GROUND
TRIGGER IN
6
3
1
2
4
5
Figure 1 – Hirose Connector Pin-Out Diagram (Hirose Connector P/N
HR10A-7P-6P(73))[not applicable for L11058]
Note: This connector also accommodates the optional optical trigger probe (ESP-LUM).